Tray, battery pack and vehicle

Abstract

The utility model relates to a tray, a battery pack and a vehicle. The tray comprises a solid piece and a front cross beam extending in the left-right direction. The front cross beam comprises a cross beam body and an anti-collision part which is connected to the cross beam body and protrudes downwards in the direction away from the cross beam body in the vertical direction, and the anti-collision part comprises a hollow cavity. The solid piece is arranged in the hollow cavity and used for improving the structural strength of the anti-collision part. According to the tray, an anti-collision beam does not need to be independently arranged, the overall structure of the anti-collision part is simple, no heavy-weight part is arranged, the weight is light, the cost is low, and enough anti-collision strength is achieved.

Description

Technical Field

[0001] The present disclosure relates to the field of battery protection technology, and in particular, to a tray, a battery pack and a vehicle. Background Art

[0002] At present, bottom scraping protection is very important for the safety of electric vehicles, especially the safety of battery packs. In related technologies, bottom scraping protection is achieved by adding an anti-collision beam structure in the front area of ​​the whole vehicle, that is, by arranging the anti-collision beam in the front side of the battery pack and lower than the height of the battery pack. When the whole vehicle encounters foreign objects in front, the foreign objects will first hit the anti-collision beam. After hitting the foreign objects, the whole vehicle will be lifted to a certain height, thereby avoiding the front beam of the battery pack from being directly hit and causing damage, thereby improving the safety of the battery.

[0003] However, the anti-collision beam needs to be installed separately, and a mounting structure needs to be reserved under the vehicle, which increases the number of assembly steps and also increases the manufacturing cost. Moreover, most anti-collision beams are hollow structures with low structural strength. Utility Model Content

[0004] The purpose of the present disclosure is to provide a pallet, a battery pack and a vehicle, wherein the pallet does not need to be provided with a separate anti-collision beam, the overall structure of the anti-collision part is relatively simple, and there are no large and heavy parts, so the weight is light, the cost is low, and the anti-collision strength is sufficient.

[0005] In order to achieve the above-mentioned object, the present disclosure provides a pallet in a first aspect, comprising a front crossbeam extending in a left-right direction;

[0006] The front cross beam comprises a cross beam body and an anti-collision portion connected to the cross beam body and protruding downward in the up-down direction away from the cross beam body, wherein the anti-collision portion comprises a hollow cavity; and

[0007] A solid piece is arranged inside the hollow cavity to improve the structural strength of the anti-collision part.

[0008] Optionally, the anti-collision portion includes upper transverse ribs and lower transverse ribs spaced apart in the up-down direction, and front vertical ribs and rear vertical ribs spaced apart in the front-back direction;

[0009] The solid piece is formed with a first cavity in the middle of the front-to-back direction, which is recessed in a direction away from the upper transverse rib; and / or

[0010] The upper transverse rib forms a second cavity in the middle of the front-to-back direction, which is recessed in a direction away from the solid member.

[0011] Optionally, the hollow cavity extends along the left-right direction, and the solid piece is constructed as a strip-shaped piece extending along the left-right direction.

[0012] Optionally, the front vertical rib is formed with a first mounting portion for mounting a first pull rivet nut;

[0013] The solid piece is formed with a first avoidance hole corresponding to the first mounting portion and used for avoiding the first rivet nut.

[0014] Optionally, the lower transverse rib is formed with a second mounting portion for mounting a second rivet nut;

[0015] The solid piece is formed with a second avoidance hole corresponding to the second mounting portion and used for avoiding the second rivet nut.

[0016] Optionally, an avoidance platform is formed on a side of the second avoidance hole facing the second mounting portion, and the avoidance platform is used to avoid rivet deformation of the second rivet nut.

[0017] Optionally, the second avoidance hole is communicated with the first concave cavity, so that the second rivet nut is at least partially located in the first concave cavity.

[0018] Optionally, the two opposite sides of the first cavity in the front-to-back direction respectively abut against the junction of the upper transverse rib and the front vertical rib and the junction of the upper transverse rib and the rear vertical rib.

[0019] Optionally, the pallet further comprises a rear crossbeam, a left longitudinal beam, a right longitudinal beam and a bottom guard plate;

[0020] The front cross beam, the rear cross beam, the left longitudinal beam and the right longitudinal beam form an annular frame structure, the bottom guard plate is connected to the bottom surface of the annular frame structure, and the annular frame structure and the bottom guard plate form an installation space for installing battery cells.

[0021] Optionally, the bottom guard plate is connected to the lower transverse rib of the front cross beam through a second rivet nut.

[0022] Optionally, the pallet further includes a sealing ring disposed between the annular frame structure and the bottom guard plate, wherein the sealing ring is used for sealing connection between the annular frame structure and the bottom guard plate.

[0023] In a second aspect of the present disclosure, a battery pack is provided, the battery pack comprising a battery cell and the tray provided in the first aspect of the present disclosure;

[0024] The tray includes a mounting space in which the battery cells are mounted.

[0025] According to a third aspect of the present disclosure, a vehicle is further provided, comprising the battery pack provided in the second aspect of the present disclosure.

[0026] Through the above technical solution, the pallet disclosed in the present invention includes a front crossbeam extending in the left-right direction, the front crossbeam includes a crossbeam body and an anti-collision part connected to the crossbeam body and protruding downward in the up-down direction away from the crossbeam body and having a hollow cavity, a solid piece is arranged inside the hollow cavity, when the whole vehicle encounters a foreign object in front of it, the foreign object will first hit the anti-collision part, the hollow cavity can improve the structural strength of the anti-collision part through the solid piece arranged inside the hollow cavity, avoid the anti-collision part from being damaged due to excessive deformation, and ensure that the overall air tightness of the battery pack meets the set requirements. Compared with the related art, the pallet disclosed in the present invention does not need to set up an anti-collision beam separately, and the overall structure of the anti-collision part is relatively simple, and there are no heavy parts, so it is light in weight, low in cost, and has sufficient anti-collision strength.

[0027] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0029] Figure 1 is a structural diagram of a tray provided in some embodiments of the present disclosure.

[0030] Figure 2 is a structural diagram of a front crossbeam of a pallet provided in some embodiments of the present disclosure, wherein a solid piece is installed inside a hollow cavity.

[0031] Figure 3 is an exploded structural diagram of a front crossbeam of a pallet provided in some embodiments of the present disclosure.

[0032] Figure 4 This is a side structural diagram of a front cross beam provided in some embodiments of the present disclosure, observed from left to right.

[0033] Figure 5 It is a lateral structural diagram of the front cross beam provided in some embodiments of the present disclosure, without showing the lateral blocking parts.

[0034] Figure 6 is based on Figure 5 CC section view in.

[0035] Figure 7 It is a cross-sectional view in the left-right direction of a front cross beam provided in some embodiments of the present disclosure.

[0036] Figure 8 It is a structural diagram of a solid piece provided in some embodiments of the present disclosure.

[0037] Fig. 9 is based on Figure 8 Enlarged view of part D in .

[0038] Fig.10 This is a partial view of a solid part from another perspective.

[0039] Fig.11 is a cross-sectional view of a solid piece provided by some embodiments of the present disclosure.

[0040] Fig.12 is an exploded diagram of a battery pack provided in some embodiments of the present disclosure.

[0041] Description of Reference Numerals

[0042] 10-tray; 11-installation space; 100-front crossbeam; 110-anti-collision part; 1101-first opening; 111-upper transverse rib; 1111-second concave cavity; 112-lower transverse rib; 1121-second installation part; 113-front vertical rib; 1131-first installation part; 114-rear vertical rib; 1141-second opening; 115-arc transition rib; 120-crossbeam body; 200-rear crossbeam; 300-left longitudinal beam; 400-right longitudinal beam; 500-first rivet nut; 600-second rivet nut; 700-lateral blocking piece; 800-gap blocking piece; 900-solid piece; 910-first concave cavity; 920-first avoidance hole; 930-second avoidance hole; 940-avoidance sink;

[0043] 20-bottom guard plate; 30-sealing ring; 40-battery cell;

[0044] A-hollow cavity; B-beam cavity. DETAILED DESCRIPTION

[0045] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0046] In the present disclosure, unless otherwise stated, directional words such as "up, down, left, right, front, and back" generally refer to the up, down, left, right, front, and back in the corresponding drawings, that is, the up, down, left, right, front, and back of the vehicle; "inside and outside" refer to the inside and outside of the outline of the corresponding component; "far and near" refer to the distance between the corresponding structure or the corresponding component and the distance between the corresponding structure and the corresponding component and the distance between the corresponding structure and the corresponding component and the corresponding component. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be construed as limitations on the present disclosure.

[0047] The present disclosure provides a pallet 10, a battery pack and a vehicle. Compared with the related art, the pallet 10 of the present disclosure does not need to be separately provided with an anti-collision beam, and the overall structure of the anti-collision part 110 is relatively simple, without large new parts, light in weight, low in cost, and can ensure sufficient strength while having the ability to absorb crushing energy.

[0048] In order to achieve the above purpose, Figures 1 to 11 As shown, an embodiment of the present disclosure provides a pallet 10, including a front crossbeam 100 extending in the left-right direction and a solid piece 900; wherein the front crossbeam 100 includes a crossbeam body 120 and an anti-collision portion 110 connected to the crossbeam body 120 and protruding downward in the up-down direction away from the crossbeam body 120, the anti-collision portion 110 includes a hollow cavity A, and the solid piece 900 is arranged inside the hollow cavity A to improve the structural strength of the anti-collision portion 110.

[0049] Through the above technical solution, the tray 10 of the present invention includes a front crossbeam 100 extending in the left-right direction, the front crossbeam 100 includes an anti-collision part 110 protruding downward in the up-down direction and having a hollow cavity A, and a solid piece 900 is arranged inside the hollow cavity A. When the whole vehicle encounters a foreign object in front of it, the foreign object will first hit the anti-collision part 110. The hollow cavity A can improve the structural strength of the anti-collision part 110 through the solid piece 900 arranged inside the hollow cavity A, so as to avoid the anti-collision part 110 from being damaged due to excessive deformation, and ensure that the overall air tightness of the battery pack meets the set requirements. Compared with the related art, the tray 10 of the present invention does not need to set up an anti-collision beam separately, and the overall structure of the anti-collision part 110 is relatively simple, and there are no heavy parts, so it is light in weight, low in cost, and has sufficient anti-collision strength to avoid the battery pack from being damaged due to anti-collision.

[0050] It is worth noting that when the hollow cavity A is provided with a solid piece 900, the anti-collision portion 110 is configured to be damaged when subjected to a preset impact, for example, only a certain deformation occurs without tearing or breaking.

[0051] The solid part 900 can be made by extrusion or other process forms, and the material can be aluminum alloy and other materials. By being inserted into the hollow cavity A, it forms a protective structure with the hollow cavity A to form a good load-bearing structure. When the battery pack is subjected to the bottom scraping condition, the load-bearing structure can effectively resist the impact of the bottom scraping condition, thereby ensuring that the anti-collision part 110 (hollow cavity A) will not collapse and be damaged, thereby ensuring the airtightness of the battery pack.

[0052] Optionally, the anti-collision portion 110 includes an upper transverse rib 111 and a lower transverse rib 112 spaced apart in the up-down direction, and a front vertical rib 113 and a rear vertical rib 114 spaced apart in the front-back direction; wherein the upper transverse rib 111, the front vertical rib 113, the lower transverse rib 112 and the rear vertical rib 114 surround a hollow cavity A. The solid member 900 is formed with a first concave cavity 910 that is concave in a direction away from the upper transverse rib 111. Among them, the solid piece 900 is formed with a first concave cavity 910. On the one hand, in the anti-scratch bottom condition, the first concave cavity 910 feature can avoid collision with the upper transverse rib 111, thereby preventing the upper transverse rib 111 from being damaged and causing failure. On the other hand, as described below, when processing the second avoidance hole 930 (when processing this feature, the solid piece 900 and the solid piece 900 that has been inserted into the hollow cavity A form a whole), aluminum chips or other waste materials can be accumulated in the first concave cavity 910 feature, thereby preventing chips from squeezing the upper transverse rib 111 and causing damage to the upper transverse rib 111.

[0053] In some other embodiments, the upper transverse rib 111 is formed with a second concave cavity 1111 in the middle of the front-to-back direction, which is concave away from the solid piece 900. Through the above arrangement, a certain space gap can also be formed between the solid piece 900 and the upper transverse rib 111 to avoid the contact area between the two being too large and causing damage to the upper transverse rib 111, thereby affecting the air tightness of the battery pack. When processing the second avoidance hole 930 (when processing this feature, the solid piece 900 and the hollow cavity A that has been inserted form a whole), aluminum chips or other waste materials can be accumulated in the second concave cavity 1111 feature to prevent the chips from squeezing the upper transverse rib 111 and causing damage to the upper transverse rib 111.

[0054] In other embodiments, the solid piece 900 is formed with a first concave cavity 910 that is recessed in a direction away from the upper transverse rib 111. Similarly, the solid piece 900 is formed with a second concave cavity 1111 that is recessed in a direction away from the solid piece 900 in the middle portion in the front-to-back direction. The first concave cavity 910 can be arranged opposite to the second concave cavity 1111 to form a cavity together, which can also play the role of the above-mentioned separately arranged first concave cavity 910 and separately arranged second concave cavity 1111, which will not be repeated here.

[0055] In some embodiments, the front beam 100 may include a beam body 120 and an anti-collision portion 110 connected to the bottom of the beam body 120. At least one beam cavity B is formed on the beam body 120. The beam cavity BB is located above the hollow cavity A and is divided into two different chambers by the upper transverse ribs 111, thereby ensuring that the beam cavity B and the hollow cavity A form an independent and isolated space.

[0056] If the vehicle is hit severely during driving, the second rivet nut 600 on the lower transverse rib 112 for connecting the bottom guard plate 20 may move upward due to the deformation of the anti-collision part 110, so as to break through the upper transverse rib 111 and destroy the airtightness of the battery pack. Therefore, the upper transverse rib 111 is arranged farther from the second rivet nut 600, that is, a sufficient distance is reserved between the two, so that in the bottom scraping condition, even if the second rivet nut 600 is subjected to a certain displacement, it will not break through the upper transverse rib 111, thereby ensuring that the cross beam cavity B and the hollow cavity A are physically isolated.

[0057] It is worth noting that in the related art, the hollow cavity A can be configured to collapse and deform to absorb energy when subjected to a preset impact. Due to its relatively low strength, the second rivet nut 600 may pass through the upper transverse rib 111 and cause overall damage, thereby destroying the airtightness of the battery pack. The embodiment of the present disclosure improves the overall strength of the anti-collision part 110 by installing a solid part 900 inside the hollow cavity A, so that it will not be damaged by deformation when subjected to a large impact force, thereby improving the safety performance of the battery pack.

[0058] The hollow cavity A can be constructed using any suitable structure, such as Figure 3 and Figure 8 As shown, in some embodiments, the hollow cavity A extends in the left-right direction, and the solid member 900 is configured as a strip extending in the left-right direction. The hollow cavity A is a through hole extending in the left-right direction and arranged inside the anti-collision part 110, and the solid member 900 is also configured as a strip extending in the left-right direction and installed inside the through hole, thereby supporting the extension direction of the entire anti-collision part 110 and improving the strength of the anti-collision part 110.

[0059] It should be noted that the hollow cavity A can be an integral structure extending in the left-right direction, or it can be a plurality of sub-cavities arranged at intervals in the left-right direction; the corresponding solid piece 900 can also be a solid piece 900 extending in the left-right direction, or it can be a plurality of solid sub-pieces installed in a plurality of sub-cavities, which can absorb energy by collapsing when impacted.

[0060] In order to fix explosion-proof valves and other similar parts, such as Figure 6 and Figure 8 As shown, in some embodiments, the front vertical rib 113 is formed with a first mounting portion 1131 for mounting the first rivet nut 500. The first mounting portion 1131 may be a through hole that penetrates the front vertical rib 113 in the front-to-back direction, and is used to fix the above-mentioned other parts such as the explosion-proof valve on the front transverse rib by mounting the first rivet nut 500.

[0061] The first rivet nut 500 will partially extend into the hollow cavity A, thereby interfering with the solid member 900. Therefore, in order to avoid the above interference, Figure 7 , Fig. 9 , Fig.10 and Fig.11 As shown, in some embodiments, the solid piece 900 is formed with a first avoidance hole 920 corresponding to the first mounting portion 1131 and used to avoid the first rivet nut 500. The first avoidance hole 920 can be a through hole or a blind hole, as long as it can ensure the installation of the first rivet nut 500, and is not specifically limited here.

[0062] In order to fix the bottom guard plate 20, as Figure 6 and Fig.10 As shown, in some embodiments of the present disclosure, the lower transverse rib 112 is formed with a second mounting portion 1121 for mounting the second rivet nut 600; similarly, the second mounting portion 1121 may be a through hole penetrating the lower transverse rib 112 in the up-down direction, and is used to fix the bottom guard plate 20 by mounting the second rivet nut 600. It can be understood that the lower transverse rib 112 is locked to the second rivet nut 600, so the lower transverse rib 112 can be set thicker than the upper transverse rib 111 to bear the force of the bottom scraping condition.

[0063] The second rivet nut 600 will also partially extend into the hollow cavity A, thereby interfering with the solid piece 900. Therefore, in order to avoid the above interference, Fig.10 and Fig.11 As shown, in some embodiments, the solid piece 900 is formed with a second avoidance hole 930 corresponding to the second mounting portion 1121 and used to avoid the second rivet nut 600. The second avoidance hole 930 can be a through hole or a blind hole, as long as it can ensure the installation of the second rivet nut 600, and is not specifically limited here.

[0064] The second rivet nut 600 will be deformed after being connected. Therefore, in some embodiments of the present disclosure, a avoidance sink 940 is formed on one side of the second avoidance hole 930 facing the second mounting portion 1121. The avoidance sink 940 is used to avoid the rivet deformation of the second rivet nut 600. The avoidance sink 940 is provided to avoid the rivet deformation of the second rivet nut 600 of the lower transverse rib 112. When the second rivet nut 600 is riveted, a convex feature is formed, and a corresponding avoidance sink 940 is required to avoid it.

[0065] Optionally, the second avoidance hole 930 is connected to the first concave cavity 910, so that the installed second rivet nut 600 can be at least partially located in the first concave cavity 910. There is a gap between the end of the second rivet nut 600 located in the first concave cavity 910 facing the upper transverse rib 111 and the upper transverse rib 111, so as to prevent the second rivet nut 600 from penetrating the upper transverse rib 111 and causing tearing damage due to deformation of the anti-collision portion 110, thereby affecting the air tightness of the battery pack.

[0066] In some embodiments, the two opposite sides of the first cavity 910 in the front-to-back direction are respectively in contact with the junction of the upper transverse rib 111 and the front vertical rib 113 and the junction of the upper transverse rib 111 and the rear vertical rib 114. Figure 5 As shown, the portion of the solid piece 900 located on the left side of the first cavity 910 can abut against the junction of the upper transverse rib 111 and the front vertical rib 113, while the portion of the solid piece 900 located on the left side of the first cavity 910 can abut against the junction of the upper transverse rib 111 and the rear vertical rib 114. Through the contact between the above two, the anti-collision part 110 is used to provide support when it is hit, thereby avoiding excessive deformation and causing the second rivet nut 600 to break through the upper transverse rib 111.

[0067] Optionally, the upper transverse rib 111 is located above the rear vertical rib 114 in the vertical direction. For example, the length of the front vertical rib 113 may be greater than the length of the rear vertical rib 114, the upper transverse rib 111 and the lower transverse rib 112 may be arranged horizontally in the front-to-back direction, and the upper and lower ends of the front vertical rib 113 are respectively connected to the front ends of the upper transverse rib 111 and the lower transverse rib 112, the lower end of the rear vertical rib 114 may be directly connected to the rear end of the lower transverse rib 112, and the upper end of the rear vertical rib 114 is lower than the upper transverse rib 111 in the vertical direction. For example, the connection between the two may be achieved through other connecting structures. Therefore, the connecting structure forms a relatively weak position of the entire anti-collision portion 110. When a collision occurs, the front vertical rib 113, the lower transverse rib 112 and the rear vertical rib 114 or the position of the connecting structure are deformed first, so that the upper transverse plate is protected to avoid damage due to the collision that affects the safety of the battery pack.

[0068] Optionally, a collapse structure is formed at the junction of the upper horizontal rib 111 and the rear vertical rib 114, and the collapse structure is configured to collapse and deform preferentially when the anti-collision part 110 is impacted. The collapse structure can be made of a relatively low-strength material, a relatively thin thickness, or a special shape, so that the position is deformed preferentially when the anti-collision part 110 is impacted to avoid overall damage to the anti-collision part 110.

[0069] The collapse structure can be constructed using any suitable structure, such as Figure 4 , Figure 5 and Figure 7 As shown, for example, the collapse structure is constructed as an arc-shaped transition rib 115 connecting the upper horizontal rib 111 and the rear vertical rib 114. The arc-shaped transition rib 115 can be a structure located above the rear vertical rib 114 and recessed toward the interior of the hollow cavity A. When the anti-collision portion 110 is impacted, the arc-shaped transition rib 115 is preferentially collapsed and deformed. In addition, the arc-shaped transition rib 115 can also be recessed in a direction away from the hollow cavity A, and the above-mentioned collapse deformation can also be achieved. It can be understood that the above-mentioned collapse structure can also be constructed as a plurality of arc-shaped transition ribs 115 that are recessed in a direction toward the interior of the hollow cavity A and recessed in a direction away from the hollow cavity A, which are connected in sequence, and the effect of absorbing energy through collapse deformation can also be achieved.

[0070] In some embodiments, the hollow cavity A penetrates opposite sides of the front crossbeam 100 in the left-right direction; the tray 10 further includes lateral blocking members 700; the lateral blocking members 700 are sealed and installed at the first openings 1101 at opposite sides of the hollow cavity A. There are two lateral blocking members 700, which are sealed and installed at the first openings 1101 at opposite sides of the hollow cavity A, respectively. For example, welding or other processes can be used to seal and connect the first openings 1101 to form a sealed structure to improve the airtightness of the battery cells 40 inside the tray 10.

[0071] In other embodiments, the rear vertical rib 114 is formed with a second opening 1141 for accommodating the first rivet nut 500 ; the tray 10 further includes a gap plugging member 800 for sealingly installing in the second opening 1141 .

[0072] The gap plugging member 800 can be installed in the second opening 1141 in any suitable manner, including but not limited to welding, and can also be bonded with structural adhesives. It should be noted that both need to meet the sealing requirements. In addition, a clearance opening is provided at a position corresponding to the first mounting portion 1131 on the gap plugging member 800, which is used to avoid the first rivet nut 500 after installation. After the first rivet nut 500 is installed, the gap between the clearance opening and the second rivet nut 600 can be sealed by structural adhesive or welding.

[0073] The tray 10 of the present disclosure is a part of the battery pack structure, and the anti-collision part 110 is formed with the front crossbeam 100 of the tray 10, which is installed on the whole vehicle together with other parts of the battery pack. The application scenarios of the present disclosure can be various working conditions such as parking, driving, and braking of the vehicle.

[0074] In some specific embodiments, the front crossbeam 100 is a part of the tray 10 of the battery pack, and can be made by extrusion or other processes. The anti-collision portion 110 can be composed of an upper transverse rib 111, a front vertical rib 113, a lower transverse rib 112, and a rear vertical rib 114, which are sequentially connected to form the hollow cavity A.

[0075] The side sealing parts are arranged at the two first openings 1101 on both sides of the front cross beam 100 in the left and right directions. The side sealing parts can be made of aluminum alloy or similar materials, and the process can be extrusion or similar processes. They can be connected and fixed to the front cross beam 100 at the first opening 1101 by welding or other processes, but the sealing requirements must be met.

[0076] The gap plugging piece 800 is arranged at the second opening 1141 of the rear vertical rib 114, and an avoidance opening is set on the gap plugging piece 800 for avoiding the first rivet nut 500. The gap plugging piece 800 can be made of aluminum alloy or similar materials, and the process form can be extrusion or similar processes. It can be fixed together with the front cross beam 100 by welding or other processes, that is, fixedly connected at the second opening 1141. The first rivet nut 500 and the gap plugging piece 800 are bonded by structural adhesive or welding, and these areas must meet the sealing requirements.

[0077] From the above introduction, it can be seen that in the pallet 10, an anti-collision portion 110 is mainly provided in the front cross beam 100, and a hollow cavity A is provided in the anti-collision portion 110, and by increasing the gap between the second rivet nut 600 and the upper cross rib 111, it is ensured that when the battery pack is experiencing a bottom scraping condition, the lower cross rib 112 of the front cross beam 100 will not be damaged, and even after a certain collapse space is formed, the second rivet nut 600 will not contact the upper cross rib 111 during the deformation stroke displacement, thereby ensuring the independence and integrity of the two cavities (cross beam cavity B and hollow cavity A), and finally, by providing a lateral blocking member 700 and a gap blocking member 800, the air tightness of the pallet 10 and the battery pack is ensured.

[0078] In some embodiments, the tray 10 further includes a rear cross beam 200, a left longitudinal beam 300, a right longitudinal beam 400 and a bottom guard plate 20; the front cross beam 100, the rear cross beam 200, the left longitudinal beam 300 and the right longitudinal beam 400 form an annular frame structure, the bottom guard plate 20 is connected to the bottom surface of the annular frame structure, and the annular frame structure and the bottom guard plate 20 form an installation space 11 for installing the battery cell 40. The bottom guard plate 20 is connected to the bottom of the front cross beam 100, the rear cross beam 200, the left longitudinal beam 300 and the right longitudinal beam 400, and together with the frame structure, forms an installation space 11 for installing the battery cell 40. It can be understood that the front cross beam 100 and the bottom guard plate 20 are connected to the lower side transverse rib 112 using the second pull rivet nut 600. The rear cross beam 200, the left longitudinal beam 300 and the right longitudinal beam 400 can also use the above-mentioned pull rivet nut or a similar pull rivet nut to achieve the fixed connection of the bottom guard plate 20.

[0079] In order to achieve a sealed connection between the bottom guard plate 20 and the front cross beam 100, the rear cross beam 200, the left longitudinal beam 300 and the right longitudinal beam 400, in some embodiments, the pallet 10 further includes a sealing ring 30 disposed between the annular frame structure and the bottom guard plate 20, for sealing the annular frame structure and the bottom guard plate 20. The sealing ring 30 can be sealed with reference to materials known in the relevant art, including but not limited to epoxy resin or polyurethane, etc., which will not be described in detail here.

[0080] like Fig.12 As shown in the figure, an embodiment of the present disclosure provides a battery pack, which includes a battery cell 40 and a tray 10 provided in the above embodiment of the present disclosure, wherein the tray 10 includes an installation space 11, and the battery cell 40 is installed inside the installation space 11. Therefore, the battery pack also has all the above advantages, which will not be described one by one here.

[0081] In some embodiments, the battery pack further includes a battery cell 40; the bottom guard plate 20 is connected to the bottom surface of the annular frame structure, the annular frame structure and the bottom guard plate 20 enclose an installation space 11, and the battery cell 40 is installed in the installation space 11. Among them, the tray 10 includes a front crossbeam 100, a rear crossbeam 200, a left longitudinal beam 300 and a right longitudinal beam 400, and encloses an annular frame structure, and the bottom guard plate 20 is connected to the bottom of the front crossbeam 100, the rear crossbeam 200, the left longitudinal beam 300 and the right longitudinal beam 400, and together with the frame structure, encloses an installation space 11 for installing the battery cell 40. It can be understood that the above-mentioned front crossbeam 100 and the bottom guard plate 20 are connected to the lower side transverse rib 112 using the above-mentioned second rivet nut 600. The rear crossbeam 200, the left longitudinal beam 300 and the right longitudinal beam 400 can also use the above-mentioned rivet nut or a similar rivet nut to achieve the fixed connection of the bottom guard plate 20.

[0082] In order to achieve a sealed connection between the bottom guard plate 20 and the front cross beam 100, the rear cross beam 200, the left longitudinal beam 300 and the right longitudinal beam 400, in some embodiments, the battery pack further includes a sealing ring 30 disposed between the annular frame structure and the bottom guard plate 20, which is used for the sealed connection between the annular frame structure and the bottom guard plate 20. The sealing ring 30 can be sealed with reference to materials known in the relevant art, including but not limited to epoxy resin or polyurethane, etc., which will not be described in detail here.

[0083] The embodiment of the present disclosure also provides a vehicle, which includes the battery pack provided by the above embodiment of the present disclosure, so the vehicle also has all the advantages of the above battery pack. The vehicle includes but is not limited to electric vehicles, hybrid vehicles, etc.

[0084] The tray 10 disclosed in the present invention includes a front crossbeam 100 extending in the left-right direction, the front crossbeam 100 includes an anti-collision portion 110 which protrudes downward in the up-down direction and has a hollow cavity A, and a solid member 900 is arranged inside the hollow cavity A. When the whole vehicle encounters a foreign object in front of it during driving, the foreign object will preferentially hit the anti-collision portion 110, and the hollow cavity A avoids damage to the front crossbeam 100 by shrinking and absorbing energy, thereby protecting the battery cell 40 located behind the front crossbeam 100 inside the tray 10. At the same time, the solid member 900 arranged inside the hollow cavity A can improve the structural strength of the anti-collision portion 110, avoid damage to the anti-collision portion 110 due to excessive deformation, and ensure that the overall air tightness of the battery pack meets the set requirements. Compared with the related art, the pallet 10 disclosed in the present invention does not need to be separately provided with an anti-collision beam, and the overall structure of the anti-collision part 110 is relatively simple, and there are no heavy parts, so it is light in weight and low in cost. It can also ensure sufficient strength while having the ability to absorb energy through collapse, thereby improving the safety performance of the battery pack.

[0085] The tray 10 disclosed in the present invention has a more ingenious structural form set on the front cross beam 100. The entire structural form is relatively simple, and the weight advantage is obvious. There are no heavy parts, and the process form is also relatively simple. The cost of the entire solution is low, and the protection effect can be achieved only through the design of the battery pack.

[0086] At the same time, when the battery pack experiences bottom scraping conditions, the deformation of the front cross beam 100 will not cause damage, the entire protective structure is relatively complete, and the air tightness of the battery pack can meet the set requirements.

[0087] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0088] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0089] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A pallet, characterized in that: including a front crossbeam extending in the left-right direction; The front cross beam comprises a cross beam body and an anti-collision portion connected to the cross beam body and protruding downward in the up-down direction away from the cross beam body, wherein the anti-collision portion comprises a hollow cavity; and A solid piece is arranged inside the hollow cavity to improve the structural strength of the anti-collision part.

2. The pallet according to claim 1, characterized in that The anti-collision part includes an upper transverse rib and a lower transverse rib arranged at intervals in the up-down direction, and a front vertical rib and a rear vertical rib arranged at intervals in the front-back direction; The solid piece is formed with a first cavity in the middle of the front-to-back direction, which is recessed in a direction away from the upper transverse rib; and / or The upper transverse rib forms a second cavity in the middle of the front-to-back direction, which is recessed in a direction away from the solid member.

3. The pallet according to claim 2, characterized in that: The hollow cavity extends along the left-right direction, and the solid piece is configured as a strip-shaped piece extending along the left-right direction.

4. The pallet according to claim 2 or 3, characterized in that: The front vertical rib is formed with a first mounting portion for mounting a first pull rivet nut; The solid piece is formed with a first avoidance hole corresponding to the first mounting portion and used for avoiding the first rivet nut.

5. The pallet according to claim 2 or 3, characterized in that: The lower transverse rib is formed with a second mounting portion for mounting a second rivet nut; The solid piece is formed with a second avoidance hole corresponding to the second mounting portion and used for avoiding the second rivet nut.

6. The pallet according to claim 5, characterized in that: A avoidance platform is formed on one side of the second avoidance hole facing the second mounting portion, and the avoidance platform is used to avoid the rivet deformation of the second rivet nut.

7. The pallet according to claim 5, characterized in that: The second avoidance hole is communicated with the first concave cavity, so that the second rivet nut is at least partially located in the first concave cavity.

8. The pallet according to claim 2, characterized in that: The opposite sides of the first cavity in the front-to-back direction are respectively in contact with the junction of the upper transverse rib and the front vertical rib and the junction of the upper transverse rib and the rear vertical rib.

9. The pallet according to claim 1, characterized in that: The pallet also includes a rear crossbeam, a left longitudinal beam, a right longitudinal beam and a bottom guard plate; The front cross beam, the rear cross beam, the left longitudinal beam and the right longitudinal beam form an annular frame structure, the bottom guard plate is connected to the bottom surface of the annular frame structure, and the annular frame structure and the bottom guard plate form an installation space for installing battery cells.

10. The pallet according to claim 9, characterized in that The bottom guard plate is connected to the lower transverse rib of the front cross beam through a second rivet nut.

11. The pallet according to claim 10, characterized in that The pallet further comprises a sealing ring arranged between the annular frame structure and the bottom guard plate, wherein the sealing ring is used for sealing connection between the annular frame structure and the bottom guard plate.

12. A battery pack, characterized in that: The battery pack comprises a battery cell and a tray according to any one of claims 1 to 11; The tray includes a mounting space in which the battery cells are mounted.

13. A vehicle, characterized in that: The vehicle includes the battery pack of claim 12.

Images